1226155400264 has 8 divisors (see below), whose sum is σ = 2299041375510. Its totient is φ = 613077700128.

The previous prime is 1226155400191. The next prime is 1226155400333. The reversal of 1226155400264 is 4620045516221.

It can be written as a sum of positive squares in only one way, i.e., 1186047327364 + 40108072900 = 1089058^2 + 200270^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76634712509 + ... + 76634712524.

Almost surely, 2^{1226155400264} is an apocalyptic number.

It is an amenable number.

1226155400264 is a deficient number, since it is larger than the sum of its proper divisors (1072885975246).

1226155400264 is a wasteful number, since it uses less digits than its factorization.

1226155400264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153269425039 (or 153269425035 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 1226155400264 in words is "one trillion, two hundred twenty-six billion, one hundred fifty-five million, four hundred thousand, two hundred sixty-four".